Chicago-latrobe 68817 Taper Length Drill Bit 17/64 in

Product Description

The CHICAGO-LATROBE 68817 is a taper length, high-speed steel drill bit designed for heavy-duty drilling in a wide range of metalworking applications. It measures 17/64 inch (0.2656 inches) in diameter and features a 135-degree split point that self-centers on contact, reducing the need for a center punch and minimizing walking on hard surfaces. The parabolic flute geometry clears chips efficiently, making it well-suited for deeper holes without packing. With a tanged shank and web-thinned, tapered web configuration, this bit is built for production and maintenance drilling where precision and tool life both matter. It is installed and used by machinists, millwrights, pipefitters, and general maintenance trades.

This drill bit is rated for use in alloy steel, carbon steel, aluminum, and non-ferrous metals, covering the most common stock materials encountered in fabrication shops, industrial maintenance, and mechanical contracting. The taper length body provides extra reach compared to a jobber-length bit, useful when drilling into recessed or deep-set locations. The bright, uncoated finish is standard for general-purpose HSS tooling. The Series 120DH designation places this bit in a heavy-duty classification, meaning tighter tolerances and a more robust web than standard drill index bits. It is a single-piece package intended for individual replacement or low-volume use.

Key Features

• 135-degree split point self-centers and reduces thrust required to start the hole
• Parabolic flute design improves chip evacuation in deeper cuts
• Web-thinned, tapered web configuration reduces cutting resistance
• High-speed steel construction handles alloy steel, carbon steel, aluminum, and non-ferrous metals
• Tanged shank provides positive drive engagement in compatible chucks
• Heavy-duty Series 120DH grade with diameter tolerance of +0.0000 to -0.0010 inches

Compatibility

Rated for use in alloy steel, aluminum, carbon steel, and non-ferrous metals as stated by the manufacturer. Fits standard drill chucks and equipment accepting a tanged shank of 0.2656 inches in diameter. No specific machine model compatibility is provided in the product data.

Installation Notes

Install and remove drill bits only with the spindle fully stopped and power disconnected or locked out per site lockout/tagout procedures. Secure the workpiece before drilling to prevent rotation. Use cutting fluid appropriate for the material being drilled to extend tool life and maintain hole quality. Inspect the bit for chipping or wear before each use; a damaged split point will increase thrust requirements and reduce hole accuracy.